Abstract: Proper seismic excitation means and equivalent viscoelasticity constitutive model were adopted, and the FEA dynamic characteristics of asphalt concrete core rockfill dams on deep overburden (147.95 m) were studied in very detail in this paper. In the study, the characteristics of stress and displacement of the seepage prevention wall with deep overburden were analyzed. Finally, the rule of stress and displacement change according to characteristic parameters change of seepage prevention wall during engineering completion and water impounding operation period was given. As well, the paper provided reference for material selection of the seepage prevention wall.